If Book cover design services don’t give their expertise, or if I doubt the relevance in their experience, then I give them a 5. Designers will only receive a 1 when they tell me outright; “I’ve under no circumstances designed a book cover like this and I don’t feel snug https://medium.com/@Self-publishing-on-Amazon/4-things-to-do-when-self-publishing-a-book-on-amazon-0b3cf30d03df